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2025-09-15cdx: Split mcdi.h and reorganize headersShubhrajyoti Datta1-242/+0
Move bitfield.h from the CDX controller directory to include/linux/cdx to make them accessible to other drivers. As part of this refactoring, split mcdi.h into two headers: - mcdi.h: retains interface-level declarations - mcdid.h: contains internal definitions and macros This is in preparation for VersalNET EDAC driver that relies on it. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/20250908115649.22903-1-shubhrajyoti.datta@amd.com
2023-06-15cdx: Replace custom mcdi logging with print_hex_dump_debug()Abhijit Gangurde1-6/+0
Replace custom mcdi logging for send and receive requests with dynamic debug method print_hex_dump_debug(). Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Message-ID: <20230613084318.27996-1-abhijit.gangurde@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-29cdx: add rpmsg communication channel for CDXNipun Gupta1-0/+10
RPMsg is used as a transport communication channel. This change introduces RPMsg driver and integrates it with the CDX controller. Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/r/20230313132636.31850-7-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-29cdx: add MCDI protocol interface for firmware interactionNipun Gupta1-0/+238
The MCDI (Management CPU Driver Interface) is used as a protocol to communicate with the RPU firmware. It has pre-defined set of messages for different message exchanges between APU and RPU. Signed-off-by: Puneet Gupta <puneet.gupta@amd.com> Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Tarak Reddy <tarak.reddy@amd.com> Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/r/20230313132636.31850-5-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>